Enter Button - committing text

When typing in Photoshop (on a Windows) I've always been able to hit 'Enter' and it will go to the next line.

Just like it just did.

Yup, it worked again, not my keyboard.

I've just had Photoshop put onto my new work computer and am trying to put space between two lines of text (I've ALWAYS been able to do this by hitting 'Enter' however many times it need). Now whenever I hit enter it escapes out of the text box and 'finishes'. I'm not done, I just want to enter to the next line!!! HELP ME!!!!!!!!